Spurious regression Samenvattingen, Aantekeningen en Examens

Normal Distribution ○ Normal curve is symmetrical ○ 2 halves are identical ○ Doesn't hit zero but gets close ○ Mean = mu ○ Width = standard deviation = sigma ○ Values often thought as distance from the mean in standard deviations § Z value...how many standard deviations away from the mean LO 2.6.6.1: Demonstrate knowledge of the concept of informational market efficiency. The three forms of market efficiency include weak form (security prices fully reflect all availa...

EPPP Research Methods and Statistics questions and answers 100% correctTheories and Hypotheses scientific theories must result in a set of propositions, or hypotheses, that can be refuted or disconfirmed internal validity extent to which we can draw cause-and-effect inferences from a study 3 criteria for internal validity 1. statistical association-the hypothesized cause and its effect covary 2. temporal precedence- the putative cause precedes its effect in time IE. symptoms ...

Market Research - ANSWER-process of designing, gathering, analyzing, and reporting information that may be used to understand customers and solve a marketing problem. ● The foundation of marketing Customer satisfaction assessments - ANSWER-JD power customer satisfaction ○ Teaching Evaluations at FSU Net Promoter Score (NPS) - ANSWER-How likely is it that you would recommend us to family, friends, colleagues etc.? ■ 11 point scale (including zero) ○ Companies care a lot about thi...

Chapter 11 Analysis of Quantitative Data 1) Explain how a researcher codes, enters, and cleans data so that it can be used for statistical analysis. What procedures are involved in each of these steps? Answer: • Coding the data: Data coding means systematically reorganizing raw numerical data into a format that is easy to analyze using computers; rules are developed whereby certain numbers are assigned to the attributes of each variable. • Entering data: Data are entered in a grid f...

EPPP questions with complete solution (test bank)Which of the following best explains the significant differences between mean IQ scores of European American and African American undergraduates? A. The difference in the quality of secondary education for European American and African American students B. Inherent brain differences between European American and African American students C. Differences between urban and suburban experiences D. An inherent bias in IQ tests toward the majority g...

Statistical Model A statistical model is a class of mathematical model, which embodies a set of assumptions concerning the generation of some sample data, and similar data from a larger population. A statistical model represents, often in considerably idealized form, the data-generating process. The assumptions embodied by a statistical model describe a set of probability distributions, some of which are assumed to adequately approximate the distribution from which a particular data set is s...

Analytics is a broad term that refers to a variety of tools that inform managerial decisions. Which term can be used to describe managerial decisions? a. Prescriptive b. Predictive c. Pareto chart d. Biased a What are two reasons for the increasing use of analytics in organizational decision making? a. Relatively lower cost of computer storage b. Lower availability of statistical experts c. Higher cost of obtaining data d. Higher computer processing power a, d In what ...

What are the parameters for a binomial distribution? - ANS X~B(n,p) (n = number, p = probability) What are the parameters for a normal distribution? - ANS X~N(µ, σ²) (µ = population mean, σ² = variance) What is the binomial equation? - ANS What is the mean of a binomial distribution? - ANS µ = np What's the variance of a binomial distribution? - ANS σ² = np(1-p) What values are given in the binomial tables? - ANS P(X < x) - if you want > x then you n...

Business Intelligence - Answer- the applications, infrastructure, and tools and practices that enable access and analysis of information to help make better decisions and improve and optimizw performance 3Vs - Answer- velocity, variety, and volume 4Vs - Answer- + veracity 6Vs - Answer- +Variability and value Big Data Criticisms - Answer- biases inherent to data theory doesn't matter gives rise to spurious relations Domain Knowledge Important because... - Answer- of the qu...

Business Intelligence - Answer- the applications, infrastructure, and tools and practices that enable access and analysis of information to help make better decisions and improve and optimizw performance 3Vs - Answer- velocity, variety, and volume 4Vs - Answer- + veracity 6Vs - Answer- +Variability and value Big Data Criticisms - Answer- biases inherent to data theory doesn't matter gives rise to spurious relations Domain Knowledge Important because... - Answer- of the qu...